Metal-catalyzed coupling process comprising reacting a compound of general formula 1 with a compound A-X, to obtain a compound of general formula 2, which may further be converted to a compound of general formula 3
Direct arylation of azine N-oxides with aryl triflates
作者:Derek J. Schipper、Mohamed El-Salfiti、Christopher J. Whipp、Keith Fagnou
DOI:10.1016/j.tet.2009.03.077
日期:2009.6
Palladium catalyzed direct arylation of azine N-oxides using aryltriflates to afford the corresponding 2-aryl azine N-oxides is described. The reaction is carried out with a range of both N-oxides and aryltriflates. The arylation can be carried out in sequence to yield differentially diarylated products. The regioselectivity and scope of 3-substituted azine N-oxides are investigated. The method is
A novel direct arylation of pyridineN-oxides with arylboronic acids through C-H functionalization has been developed. This new reaction is performed at room temperature using catalytic silver(l) nitrate in the presence of potassium persulfate and give 2-pyridyl arylation derivatives of pyridineN-oxides.
Palladium-Catalyzed Cross-Coupling Reactions of DiazineN-Oxides with Aryl Chlorides, Bromides, and Iodides
作者:Jean-Philippe Leclerc、Keith Fagnou
DOI:10.1002/anie.200602773
日期:2006.11.27
Site-Selective C–H Alkylation of Diazine <i>N</i>-Oxides Enabled by Phosphonium Ylides
作者:Prithwish Ghosh、Na Yeon Kwon、Sangil Han、Saegun Kim、Sang Hoon Han、Neeraj Kumar Mishra、Young Hoon Jung、Sang J. Chung、In Su Kim
DOI:10.1021/acs.orglett.9b02365
日期:2019.8.16
The synthesis of alkylated diazine derivatives is important for their practical utilization as pharmaceuticals and for other purposes. Herein, we describe the metal-free site-selectiveC–H alkylation of diazine N-oxides using phosphonium ylides that affords a variety of alkylated diazine derivatives with broad functional group tolerance. The utility of this method is showcased by the late-stage functionalization